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SoCache.h
00001 #ifndef COIN_SOCACHE_H
00002 #define COIN_SOCACHE_H
00003 
00004 /**************************************************************************\
00005  *
00006  *  This file is part of the Coin 3D visualization library.
00007  *  Copyright (C) by Kongsberg Oil & Gas Technologies.
00008  *
00009  *  This library is free software; you can redistribute it and/or
00010  *  modify it under the terms of the GNU General Public License
00011  *  ("GPL") version 2 as published by the Free Software Foundation.
00012  *  See the file LICENSE.GPL at the root directory of this source
00013  *  distribution for additional information about the GNU GPL.
00014  *
00015  *  For using Coin with software that can not be combined with the GNU
00016  *  GPL, and for taking advantage of the additional benefits of our
00017  *  support services, please contact Kongsberg Oil & Gas Technologies
00018  *  about acquiring a Coin Professional Edition License.
00019  *
00020  *  See http://www.coin3d.org/ for more information.
00021  *
00022  *  Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
00023  *  http://www.sim.no/  sales@sim.no  coin-support@coin3d.org
00024  *
00025 \**************************************************************************/
00026 
00027 class SoState;
00028 class SoElement;
00029 class SoCacheP;
00030 
00031 #include <Inventor/SbBasic.h>
00032 #include <stddef.h> // for NULL
00033 
00034 class COIN_DLL_API SoCache {
00035 public:
00036   SoCache(SoState * const state);
00037 
00038   void ref(void);
00039   void unref(SoState * state = NULL);
00040 
00041   void addElement(const SoElement * const elem);
00042 
00043   virtual void addCacheDependency(const SoState * state,
00044                                   SoCache * cache);
00045   virtual SbBool isValid(const SoState * state) const;
00046   const SoElement * getInvalidElement(const SoState * const state) const;
00047   void invalidate(void);
00048 
00049 protected:
00050   virtual void destroy(SoState * state);
00051   virtual ~SoCache();
00052 
00053 private:
00054   SoCacheP * pimpl;
00055 };
00056 
00057 #endif // !COIN_SOCACHE_H

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